I stayed at Saddle Ridge Garden around 4 years ago before the Ma On Shan Railway start. The air there is fresh and you can choose phase 1 better than phase 2. But compared with Fu Fai the air is better but Fu Fai is more convenient than Saddle Ridge Garden. I dont know yr budget, if you consider a small size of room, how's about Ma On Shan Centre? I think their rent is not expensive but air fresh and convenient.